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MKD21 Series
2 passages G1/8" Gas/Vacuum + 0~96 Circuits, end face outlet
pneumatic rotary unions and pneumatic swivel joint
    MKD21 is 2 passages pneumatic rotary unions and pneumatic swivel joint with end face outlet, Moflon focused pneumatic rotary unions and pneumatic swivel joint for over 30 years.
  • • with connection size G1/8", compact size, light weight, low torqure, Also optional for transmitting power line, signal line, industrial bus, control line, Electromagnetic valve, induction line, etc.;
    • Pneumatic swivel joint can combine 2~96 circuits(2A)/Power 10A.
    • Media Types: compressed Air/Gas, vacuum, etc.
Specifications
Pneumatic Rotary Unions SpecificationsMechanical data
ParameterValueParameterValue
Passage2 in 2 out, G1/8"Working LifeOver 10 Million Revs
Max.5MPa Vacuum 0.01torrRotating Speed500RPM
TorqueSee Part#ListWorking Temp.-30℃~80℃
Electrical dataOperating Humidity0~85% RH
ParameterValueContact MaterialSee Prod Quality Level
PowerSignalHousing MaterialAluminium Alloy
Rated Voltage0~240VAC/VDC0~240VAC/VDCProtection gradeIP51
Insulation Res≥500MΩ/500VDC≥500MΩ/500VDC
Lead WiresAWG17#TeflonAWG22#Teflon
Lead LengthStandard 300mm
Dielectric Strength500VAC@50Hz,60s
Res Noise<0.01Ω



MKD21 (rotary union only for pneumatic) drawing (2 in 2 out, connection size G1/8")
MKD21 Parts# List
ModelPassagesConnection SizeTube Size
MKD212G1/8"6~8mm


MKD21S-S12/MKD21S-S18/MKD21S-S24/MKD21S-S36 drawing
MKD21S-S12/MKD21S-S18/MKD21S-S24/MKD21S-S36 Parts# List
ModelPassagesConnection SizeTube SizeSignal(2A)L(mm)
MKD21S-S122G1/8"6~8mm1222.5
MKD21S-S182G1/8"6~8mm1829.5
MKD21S-S242G1/8"6~8mm2440.1
MKD21S-S362G1/8"6~8mm3653.8


MKD21S-S56 drawing 2 in 2 out, connection size G1/8"+56XSignal(2A)
MKD21-S56 Parts# List
ModelPassagesConnection SizeTube SizeSignal/(2A)
MKD21-S562G1/8"6~8mm56


What is pneumatic rotary unions and pneumatic swivel joint?

Pneumatic rotary unions is a device used to transfer gas under pressure or vacuum from a stationary inlet to a rotating outlet, preserving and isolating the gas connection. Pneumatic swivel joint is a device used to transfer gas under pressure or vacuum from a stationary inlet to a rotating outlet, preserving and isolating the gas connection when rotating 360°.

Moflon offer standard pneumatic rotary unions and pneumatic swivel joint product lines grouped by function and feature exclusive sealing technology selected for compatibility to each application's operating pressure, temperature, speed, media, and required service life.

Moflon's pneumatic rotary unionss and pneumatic swivel joints are used for injection presses,intelligent machinery,bridge cranes,platform cranes,laminating equipment,machine tools,manipulators, electric,jib cranes,knuckle boom cranes,cctv cameras & monitors,flight simulators,military defense equipment,medical and health care products,pedestal cranes,electric reels,industrial cable reels,antennas,rough terrain cranes,tower cranes and so on.

Note:10A and signal(5A) can be freely combined, please contact customer service for details.

More product references in the same series:
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